Knitting machine



Sept. 22, 1931.

s'. D. COHEN KNITTING MACHINE Filed March 1a, 1922 3 Sheets-Sheet: 1

INVE: TOR 5707011 Cohen ATTORNEYS Sept. 22, 1931. s. D. COHEN 1,324,260

KNITTING MACHINE Filed March 13, 1928 3 Sheets-Sheet 2 PIE. 5

IN V EN TOR Sin-1a Cohen- BY 2 Q A TIDRNEYS Sept. 22, 1931. s co 1,824,260

KNITTING. MACHINE Filed March 13, 1928 s Sheets-Sheet s INVEN TOR .Sqmon .H Cohen ATTORNEYS Patented Sept. 22, 193i SIMON D. COHEN, OF SAN FRANCISCO, CALIFORNIA KNITTING nacnmn j Application filed man. 13, 1928. Serial No. 261,266.

My invention relates to knitting machines and particularly to those machines usually classified as of the cylinder spring needle ii type. Especially is my invention concerned with the particular arrangement and composition of the feed devices for applying the thread or yarn to the knitting needles. An object of the invention is to provide a ma- .1 chine which is capable ofknitting material which is substantially non-extensible or stretchable.

Another object of my invention is to provide a knitting machine on which substanii tially non-stretchable material can be pro- 16' duced and in which is used a large number of parts of a standard knitting machine.

The foregoing and other objects are attained in the embodiment of the invention shown in the drawings in which Fig. 1 is a view of a knitting machine ar-* ranged according'to my invention showing the needle cylinder in plan.

Fig. 2 is a vertical cross section diametrical- 1y thru a knitting machine in accordance with 26 Fig. 1, the plane of section being indicated by.

line 22 of Fig. 1.

Fig. 3 is an enlarged detail, somewhat dia-,

grammatic ofthe cut presser utilized with my machine. 80' Fig. 4 is a diagrammatic plan disclosing one group of feed devices my invention.

Fig. 5 shows one of the needle leads.

In its preferred form, the knitting machine of my invention. preferably comprises a feed device having means for introducing a backing thread into the material and adapted tov knit stitches and cast them off the needles,in

.. conjunction with a subsequent feed device into the needles and to cast off only predetermined ones of the stitchesform'ed.

While the knitting machine of my invene tion is adaptable to a plurality of uses and 4 can be incorporated with various types of knitting machines as will be clear to those.

skilled in the art, I have chosen for illustration and description herein a cylinder 7 spring needle knitting machine largely of the standard kind.

in accordance with adapted to introduce an additional'thread' Such machines usually com rise a table 6 suitably mounted above the oor and pro-' vided with a support for an outside circle 7. The hub 8 of a needle cylinder is provided Witll fi drive gear 9 meshing with a pinion 11 coaxial with and usually joined by a shaft to a pinion 12. The latter is in mesh with a gear 13 for driving the take up shaft 14. Both of the pinions 11 and 12 are rotated by a bevel gear 15 extending below the table 6 and meshing with a bevel pinion 16 mounted on the drive shaft 17. Ordinarily tight and loose pulleys l8 and 19 are provided on the drive shaft to receive a drive belt 21 from a source of power. Actuation of the drive shaft 17 rotates the take up shaft 14 and revolves the needle cylinder 24 thru the medium of the described gear trains.

The needle cylinder may comprise an integralcasting with the hub 8 and around its periphery is provided with a recessed channel for the reception of needle leads 26 arranged with their bodies radially of the cylinder and disposedin immediate juxtaposition around the perimeter thereof. To maintain the leads 26 in position, removable clamps 27 are secured to'the rim of the cylinder 24 by studs 28. Each of the leads 26 preferably includes in the usual manner one or more spring needles 29 having their bases set into the lead and having their upper ends looped over to provide depending beards 31 which can be depressed into suitable recesses 32 formed in the needle shanks.

The outside circle 7, which is fixed on the table 6, is channelled and apertured at intervals to receive holding bolts 34 for adjustably retaining in position the elongated links 36. Each of these links is provided with a longitudinal aperture 37 into which fits a'stud 38 projectin from the lower end of a sinker stand39. There are a number of these sinker stands provided for the various burg and wheels which are comprised in the Each of the sinker stands preferably comprises a generally vertical column 41 to the upper end of which is aflixed a horizontal journal 42. A shaft 43 is resiliently slidable in the journal 42 and carries at its inner end.

one of the various burs or wheels. One or more of the sinker stands 39 can be provided with extensions 44 to receive the adjustable mountings 46 for a revoluble cloth wheel 47 or a relatively stationary cloth cam 48.

Concentric with the cylinder 24 and the outer ring 33is a relatively stationary inner ring Je1 1 y s rre' n s e e 5 s r rounding the drive shaft 14 and supported by a spider 53 merging with the t'a'blefi; The i e r ng l carries on its periphery one or more clamps 54 Which are adjustable in all directions and carry mountings 56 forthe various burs and wheels situated on the interior of the needlecylinder 24.

In ac ordan e W t m nv nt n... I Pr erably arrange the sinker stands 41 and the arious burs and wheels which they carry in a particular order. This order is subject to some ariation depending upon the type of material to be manufactured and one illus-. trative set up is disclosed in Fig. 1. The yariousburs and wheels are describedin the order they are approached by the needles I which revolve counterclockwise when viewed in Fig.1. Thus the bur first encountered by the needles is-a clearing bur 58 mounted on its respective sinker stand 41 and arranged to insure that the material being knitted is carried from the tops of the needles down below the beards and lies substantially at the bases thereof. This action is initiated by the cloth wheel 4?.

Leaving the clearing bur, the needles encounter a sinker bur'59. suitably mounted on a sinker stand 41 and arranged to take. yarn OI" thread thru the eyelet 60 and pass tween the bases and the beards of the needles and up into the heads 61 thereof." The. nee:

dles are thus charged with a thread eirtend-q ing thru their successive heads and subse. quently pass a lander bur 62 mo unted on a" clamp 54 on the inner circle 51. The lander bur is set to raise the old stitches reposing adjacent the'bases of the needles up, along the shanks of the needles and oyer and above the beards thereon to, loop with the thread oryarn extending thru the successive. heads,

In accordance with rnyinvention, 1 provide means for selecting certain of the. needies to retain the old stitches in the needle heads in' conjunction with the thread or yarn introduced by the preceding sinker bur and; also for selecting or predetermining others of said needles from which the old stitches are.

I lifted as in, the usual process of knitting,

This is accomplished by providing a cut presser 63, shown enlarged in Fig. 3, which is preferably mounted on a sinker stand 41 The presser 68 is formed Witha serrated edge.

of any desired pattern and; the one disclosed in the figure is'simply an example thereof..

The. undulatory edge" of the, presser 63. is preferably comprised of a, plurality of deep notch s 6 9 e e the pa g ne le n.

order to rotate the presser in time with the rotation of the needle cylinder. At predetermined intervals on the periphery, there are provided shallow notches 66 which receive the passing needles and exert sufiicient pressure upon them to force the needle beards 1 nto t ecesse T With hi e elv e res er, th s needles Which are contacted by the shallow notches '66 are pressed so that stitches pulled up from the bases of the pressed needles pass over the depressed needle beards. As these stitehes are pulled up farther over the depressed beards, they engage the yarn or thread'passing thru'the heads or hooks in the'n etll s and a e final y Pul d 011 hem-h r hand, mane w i are ng ge y the d ep ts 64 are t s fiici'en ly Pressed. so that. he h a -(1S Pass. in th recesses and thu 9 d s tche aise m thei Pes tie a jac nt th a o the nee es pass. te the he ds, a he pper nd f. t e need es i hout. being met ft. his when i llus ra ed we d a r m ee les in Fist The seep-e a n i the lander bur 62 and the cut presser G3, is such hat red termined 0.1165 cf the 0 stit 1. ee ite n e th n edles ar pu led ff a d pass nt th knit ma eriel; whi e et of he st tch s a e s mply reinse te in o. the looped qr. l ook ed upper. ends of the needles. Q rdin ri i t e len er b t is n t. ap if. Easting f om he needl st c s wh have been released by the action of the cut Pre ser I threfe 'e prov de a as -O bur 67. repeated 9. a d mp. e. n. the inne ci l and adapted to diseharge fro nthe needles ll e the. entree which have be n re d y theiqi teetiee. f the lend bur 62 and the ut Presser: 63., A l Qt the ars and. Wheels just described are taken together to provide ee-Qtthe feed units n. e eordae with my nren iee T ese fee .v un ts ar pr fe ab y alternated with other feed units of somewhat file eet etee r sties one o wh lose inthe r gh hand emft pn i F st.

This subsequent feed unit preferably includes inserting, a backing thread etethemeteriet A. be k-iris 2 s expedietly want d. n: a sui able s nker p s 1, proyided, with a feed regulator 69 which eqndl ets hree l oryern aro nd he ba bu teth ne dl s, I is ue ema y ter wLQQ-hl QkS E preiec c s. e w n. th v r us sele ed lede 'ot he. a kin r s at thebe kine. thr d. is nter c d e tween ews Qne Of the nee l s in any patern. Q manner d s red.- Th f t e s w l kn wn. n h -art. e s net minu ly 1 e ed i v In order to, facilitate the operation of the beekineh r seem epn m l P de a needles down to their bases. The backing thread is thus interlaced among the needles and lies above the old stitches situate at the needle bases. Following the backing bur '68 I preferably provide a clearing bur which is similar to the clearing bur 58 and likewise is mounted on a suitable sinker stand 41. The clearing bur insures that the backing yarn introduced over the bur 68 lies adjacent the bases of the needles just above the old stitches situate thereon.

Trailing the clearing bur 70 I provide another sinker bur 71 mounted on a suitable stand and adapted to sink a thread, running thru an eyelet 72, into and beneath the beards of the needles passing by. This thread engages the succeeding heads of all of the passing needles and is adapted to form loops when the old stitches are raised by a second lander bur 3 supported by a clamp 54 on the inner ring 51. The lander bur 73 works in cooperation with a presser 74 situated on the outside of the needle cylinder and suitably supported by a sinker stand 41. The presser 74 is stationary and is substantially a'cam of such contour and height that it depresses the beards 31 of all of the needles passing it into their cooperating recesses 32 In this fashion all of the material which passes the presser 74': and the lander bur 73 manipulated so that the old stitches lying adjacent the bases of the needles are lifted over the depressed beards of the needles and interlooped with the thread just introduced by the sinker bur 71. The work of the lander bur 73 is facilitated and extended by a second cast-off bur 76 situated on the inner side of the needle cylinder and mounted by a suitable clamp 54 on the inner ring 51. The bur 76 casts off the old stitches from the needles, leaving interengaged with the needle loops the new stitches formed by the thread introduced over the sinker bur 71.

This unit of the feed mechanism is preferably combined with the feed unit previously described to form a group. There are any number of similar groups employed on a given knitting machine depending primarily upon the number of threads to be introduced ind the size of the machine. If more than one such group is employed, I preferably alternate the unit with the cut presser wheel first described, with the unit last described which usually employs a presser of the cam yp It therefore occurs that in one feed unit, a backing thread is introduced into the material and all of the old stitches are cast off, while in the other unit of the feed group, an additional thread is introduced, but only predetermined ones of the stitches on certain of the needles are cast off, the others being retained until the next group of feed units is encountered. This operation continues for each feed group employed.

I have found that. the machine described produces. a novel fabric or-material which is substantially non-extensible ,or stretchable. The machine employs a large number of standard parts and is easily arranged to produce standard material. Also, it can be quickly rearranged to provide almost endless patterns and types of special materials.

It is to be understood that I do not limit myself to the form of knitting machine shown and described herein, as the invention, as set forth in the following claims may be embodied in a plurality offorms.

I claim:

1. A knitting machine of the cylinder spring needle type comprising a feed including-in succession abacking bur, a sinker bur, a presser, a lander bur, and a cast-ofi' bur; alternated with a feed including in succession a sinker bur, a lander bur, a cut presser, and a cast-off bur.

2. A knitting machine of the cylinder spring needle type comprising a feed including in succession a backing bur, a clearing bur, a sinker bur, a presser, a lander bur, and a cast-off bur; alternated with a feed includ ing in succession a clearing bur, a sinker bur, a lander bur, a cut presser, and a cast-0d bur.

3. A knitting machine of the cylinder spring needle type comprising a feed including in succession a blocked backing bur, a clearing bur,'a sinker bur, a presser, a lander bur, and a cast-off bur; alternated with a feed including in succession a clearing bur, a sink or bur, a lander bur, a cut presser, and a castoff bur. Y

4-. A knitting machine of the cylinder spring needle type comprising means for holding old stitches adjacent the bases of the needles, means for introducing a backing thread onto the bases of said needles, means for introducing a thread under the beards of said needles, means for lifting said old stitches off of said needles thereby lifting off said backing thread and leaving new stitches on said needles, means for disposing said new stitches adjacent the I bases of the needles, means for introducing another thread under the beards of said needles, and means for lifting predetermined ones of said new stitches off of certain of said needles. ,7

5. A knitting machine of the cylinder spring needle type comprising means for introducing backing thread onto said needles, means for introducing stitch thread onto said needles, means for pulling stitches together with said backing thread off of said needles, means for introducing an additional thread onto said needles, and means for pulling only predetermined ones of the stitches formed by said additional thread off of said needles.

6. In combination with a circular series of spring needles of a knitting machine, a clearing bur forcarrying fabric from the tops to 7 and others pass under the needle beards,

the bases of the needles, a sinker bur for laying a yarn or thread into the heads of the needles, a cut presser having slots of different depths in itsiedge for engaging and depressing only predetermined needles, a lander bur to raise stitches formed on depressed needles upwardly over the needle beards forming a loop and stitches on needles engaging deeper slots upwardly into the hooked end of the needles, and a cast off bur; in alternate arrangement with a backing bur for laying a backing thread or yarn above old stitches, a clearing bur, a sinker bur for sinkingia thread beneath the beards of the needles, a lander bur, a plain presser, and a cast off bur for lifting all stitches over the needles to form a loop with the thread or yarn from the last mentioned sinker bur.

7. In a feed combination for a knitting machine having a circular series of spring needles, a first feed group including, a clear ing bur, a. sinker bur feeding a thread or yarn upwardly into'the needles, a lander bur raising old stitches upwardly along the shanks and above the beards of the needles, a cut presser cooperating with the lander bur and engaging and depressing selectively only certain of the needles whereby some of the stitches raised by the lander 'bur pass oyfir u e stitches passing upwardly and over the needle beards forming loops, and a cast olf bur casting off stitches freed by the joint action of the cut presser and lander bur; and a second feed group including a cloth cam, a backing bur feeding a backing thread or yarn in interlaced relation with the needles above old stitches, a clearing bur, a sinker bur sinking a thread or yarn beneath the beards of all needles; a lander bur raising all stitches, a plain presser cooperating with the lander bur, and a cast oil bur casting off the stitches from all needles.

- 8. A kitting machine of the cylinder type comprising a frame, a series of spring nee dles rotatably mounted with respect to the frame, a first feed mounted on the frame including a backing bur, a sinker bur, a lander bar, a plain presser, and a cast off bur to replace old stitches with new stitches on all passing needles; and a second feed mounted on the frame including a sinker bur, a lander bur, a cut presser cooperating with the lander bur, and a'cast oil bur to replace old stitches with new stitches on only predetermined needles passing the second feed.

- In testimony whereof, l have hereunto setmy hand.

SIMON D. COHEN. 

